Cyclonic separating device and surface cleaning device
US11684228B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 31, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Feb 27, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/322
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cyclonic separating device includes first and second cyclonic separating units. The first cyclonic separating unit is fitted over the second cyclonic separating unit. The second cyclonic separating unit includes first cyclones and second cyclones respectively arranged in a ring shape. Dust falling ends of the first cyclones define an accommodation space therebetween. The second cyclones partially extend into the accommodation space. Each first cyclone comprises first, second and third cone sections, each of which has a cone structure; airflow sucked in the first cyclones is sequentially separated by the first, second and third cone sections, and dust in the airflow is discharged from the third cone section; a central axis of the first cone section is parallel to a longitudinal axis of the dust cup; and an angle between a central axis of the second cone section and a central axis of the third cone section is 5°-20°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.